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SI9136 Datasheet(PDF) 11 Page - Vishay Siliconix |
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SI9136 Datasheet(HTML) 11 Page - Vishay Siliconix |
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11 / 16 page ![]() Document Number: 70818 S11-0975-Rev. D, 16-May-11 www.vishay.com 11 Vishay Siliconix Si9136 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 DETAIL FUNCTIONAL BLOCK DIAGRAM Figure 5. Buck Block Diagram + - + - Logic Control - + BBM 5/3 ON/OFF_ 1X DH DL LX_ VL DH DL REF PWMCMP Pulse Skipping Control Current Limit SYNC Rectifier Control 20 mV t CS_ FB_ FB5 Internal voltage divider is only used on 5 V output. SLC RX RY BST_ Error Amplifier V Soft-Start Figure 6. PWM Flyback Block Diagram + - + - + - + - t DH DL FBFY R1 R2 DHFY DLFY BSTY LXFY Pulse Skipping Control PWM Comparator 100 mV REF COMP ICSN ICSP C/S Amplifier Current Limit ON/OFF Error Amplifier Logic Control Soft-Start V |
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